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Update compare_time.c

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This commit is contained in:
Jan Bodnar 2016-04-07 16:48:23 +02:00
parent 90c9e5c132
commit fdcff29388
1 changed files with 31 additions and 35 deletions
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66
datetime/compare_time.c
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@ -3,49 +3,45 @@
int wmain(void) {
SYSTEMTIME st1 = {0};
SYSTEMTIME st2 = {0};
FILETIME ft1 = {0};
FILETIME ft2 = {0};
st1.wYear = 2015;
st1.wMonth = 4;
st1.wDay = 12;
st2.wYear = 2015;
st2.wMonth = 5;
st2.wDay = 12;
int r1 = SystemTimeToFileTime(&st1, &ft1);
if (r1 == 0) {
wprintf(L"Failed to convert system time to file time\n (%d)",
PDWORD cChars = NULL;
HANDLE std = GetStdHandle(STD_OUTPUT_HANDLE);
if (std == INVALID_HANDLE_VALUE) {
wprintf(L"Cannot retrieve standard output handle %d\n",
GetLastError());
return 1;
}
int r2 = SystemTimeToFileTime(&st2, &ft2);
SYSTEMTIME lt = {0};
GetLocalTime(&lt);
wchar_t buf[128] = {0};
int r = GetDateFormatEx(LOCALE_NAME_USER_DEFAULT, DATE_LONGDATE,
&lt, NULL, buf, sizeof(buf)/sizeof(buf[0]), NULL);
if (r2 == 0) {
wprintf(L"Failed to convert system time to file time\n (%d)",
if (r == 0) {
wprintf(L"GetDateFormatEx function failed %d\n",
GetLastError());
CloseHandle(std);
return 1;
}
WriteConsoleW(std, buf, wcslen(buf), cChars, NULL);
r = CloseHandle(std);
if (r == 0) {
wprintf(L"Cannot close console handle %d\n",
GetLastError());
return 1;
}
short ct = CompareFileTime(&ft1, &ft2);
if (ct == -1) {
wprintf(L"4/12/2015 comes before 5/12/2015\n");
} else if (ct == 0) {
wprintf(L"4/12/2015 is equal to 5/12/2015\n");
} else if (ct == 1) {
wprintf(L"4/12/2015 comes after 5/12/2015\n");
}
CloseHandle(std);
return 0;
}